The United Nations Secretary General Kofi Annan has said he believes that weapons inspections in Iraq should continue for the present, but cannot be maintained indefinitely if Saddam Hussein's regime does not co-operate.

Iraq should not think that we are in disagreement, because when dealing with complicated aims
everyone agrees

He said the report by chief weapons inspector Hans Blix report to the Security Council on Friday had been "neither black nor white," but said that "tangible progress" had been made.

However, Mr Annan warned that despite the apparent disarray within the Security Council between countries regarding the use of possible force against Iraq, it should not be over-confident in predicting that war had been averted.

"Iraq should not think that we are in disagreement, because when dealing with complicated aims
everyone agrees," he said.

'Moral case'

Mr Blair was speaking one day after Mr Blix told the UN Security Council that after almost three months of work, his team had found no weapons of mass destruction in Iraq.

Mr Blair told a conference of his Labour Party in Glasgow that "there will be more time given to inspections" - but he also stressed "the moral case for removing Saddam".

"I continue to want to solve the issue of Iraq and weapons of mass destruction through the United Nations."

Anti-war demonstrators should remember the hundreds of thousands of people whose deaths the Iraqi leader was responsible for, Mr Blair said.

He warned that if the issue of Iraqi disarmament was not dealt with then the authority of the UN would be compromised and a far bloodier conflict would eventually come.

"If we do not confront these twin menaces of rogue states with weapons of mass destruction and terrorism, they will not disappear. They will just feed and grow on our weakness," he said.

France, China and Russia - which all have the power of veto - say inspectors should be given the time they need to complete their task.

But the US, backed by Britain, says Iraq must not be allowed to string out the inspections process.

The US and Britain would prefer the UN Security Council to pass a second resolution authorising the use of force against Iraq - which would provide international backing.

Friday's session demonstrated the level of opposition within the Security Council to any moves to cut the inspections short, the BBC's Susannah Price reports.

Mr Blix said that while serious questions did still remain - notably the disappearance of large quantities of chemical and biological material - definite progress had been made.

In his report, Mr Blix said that while disarmament could be still be achieved, "the issues of anthrax, the nerve agent VX and long-range missiles [are]... perhaps the most important problem we are facing.

"Iraq itself must squarely tackle this task and avoid belittling the questions," he said.

The chief inspector said 1,000 tons of banned chemicals and other proscribed weapons remained unaccounted for.